Sanyo MDF-U7486SC, MDF-U5486S, MDF-U7486S, MDF-U5486SC User Manual

INSTRUCTION MANUAL

MDF-U7486S

Ultra-Low Temperature Freezer

MDF-U7486SC MDF-U5486S MDF-U5486SC

MDF-U7486S

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CONTENTS

INTRODUCTION P. 2

PRECAUTIONS FOR SAFE OPERATION P. 3

ENVIRONMENTAL CONDITIONS P. 7

FREEZER COMPONENTS P. 8

Control panel P.10

INSTALLATION SITE P.11

INSTALLATION P.12

START-UP OF UNIT P.13

CHAMBER TEMERATURE SETTING P.14

KEY LOCK FUNCTION P.14

ALARM TEMPERATURE SETTING P.15

SETTING OF ALARM RESUME TIME P.16

REMOTE ALARM TERMINAL P.17

AIR INTAKE PORT P.17

CHANGE OF COMPRESSOR DELAY TIME P.18

ALARMS & SAFETY FUNCTIONS P.19

ROUTINE MAINTENANCE

Cleaning of cabinet P.20

Cleaning of condenser filter P.20

Defrosting of inside wall P.21

Cleaning of air intake port P.22

TROUBLESHOOTING P.23

DISPOSAL OF UNIT P.24

Recycle of battery P.24

DISPOSAL OF BATTERY P.25

BACK-UP SYSTEM (OPTION) P.26

TEMPERATURE RECORDER (OPTION) P.27

Installation of MTR-G85 P.27

INTERFACE BOARD (OPTION) P.27

Installation of MTR-480/MTR-L03 P.27

INVENTORY RACK (OPTION) P.28

SPECIFICATIONS (MDF-U5486S/SC) P.29

SPECIFICATIONS (MDF-U7486S/SC) P.30

PERFORMANCE P.31

SAFETY CHECK SHEET P.32

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INTRODUCTION

 Read this manual carefully before using the appliance and follow the instructions for safety operation.

 Sanyo never guarantee any safety if the appliance is used for any objects other than intended use or

used by any procedures other than those mentioned in this manual.

 Keep this manual in an adequate place to refer to it as necessary.

 The contents of the manual will be subjected to change without notice due to the improvement of

performance or functions.

 Contact Sanyo sales representative or agent if any page of the manual is lost or page order is incorrect.

 Contact Sanyo sales representative or agent if any point in this manual is unclear or if there are any

inaccuracies.

 No part of this manual may be reproduced in any form without the expressed written permission of

Sanyo.

CAUTION

SANYO guarantees the product under certain warranty conditions. SANYO in no way shall be responsible for any loss of content or damage of content.

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PRECAUTIONS FOR SAFE OPERATION

It is imperative that the user complies with this manual as it contains important safety advice.

Items and procedures are described so that you can use this unit correctly and safely. If the precautions advised are followed, this will prevent possible injury to the user and any other person.

Precautions are illustrated in the following way:

WARNING

Failure to observe WARNING signs could result in a hazard to personnel possibly resulting in serious injury or death.

CAUTION

Failure to observe CAUTION signs could result in injury to personnel and damage to the unit and associated property.

Symbol shows;

㻌

this symbol means caution.

this symbol means an action is prohibited.

this symbol means an instruction must be followed.

Be sure to keep this manual in a place accessible to users of this unit.

Some warning and/or caution labels are attached on the unit. Following shows the description of such labels.

This label is on the cover in which the electrical components of high voltage are

enclosed to prevent the electric shock. The cover should be removed by a qualified

engineer or a service personnel only.

This symbol means attention or refer to document.

This symbol means earth.

WARNING

As with any equipment that uses CO2 gas, there is a likelihood of oxygen depletion in the vicinity of the equipment. It is important that you assess the work site to ensure there is suitable and sufficient ventilation. If restricted ventilation is suspected, then other methods of ensuring a safe environment must be considered. These may include atmosphere monitoring and warning devices.

This symbol means power switch “ON”.

This symbol means power switch “OFF”.

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PRECAUTIONS FOR SAFE OPERATION

Do not use the unit outdoors. Current leakage or electric shock may result if the unit is exposed to

rain water.

Only qualified engineers or service personnel should install the unit. The installation by

unqualified personnel may cause electric shock or fire.

Install the unit on a sturdy floor and take an adequate precaution to prevent the unit from

turning over. If the floor is not strong enough or the installation site is not adequate, this may result

in injury from the unit falling or tipping over.

Never install the unit in a humid place or a place where it is likely to be splashed by water.

Deterioration of the insulation may result which could cause current leakage or electric shock.

Never install the unit in a flammable or volatile location. This may cause explosion or fire.

Never install the unit where acid or corrosive gases are present as current leakage or electric

shock may result due to corrosion.

Always ground (earth) the unit to prevent electric shock. If the power supply outlet is not

grounded, it will be necessary to install a ground by qualified engineers.

Never ground the unit through a gas pipe, water main, telephone line or lightning rod. Such

grounding may cause electric shock in the case of an incomplete circuit.

Connect the unit to a power source as indicated on the rating label attached to the unit. Use

of any other voltage or frequency other than that on the rating label may cause fire or electric shock.

Never store volatile or flammable substances in this unit if the container cannot be sealed. These

may cause explosion or fire.

Do not insert metal objects such as a pin or a wire into any vent, gap or any outlet on the unit.

This may cause electric shock or injury by accidental contact with moving parts.

Use this unit in safe area when treating the poison, harmful or radiate articles. Improper use

may cause bad effect on your health or environment.

Turn off the power switch (if provided) and disconnect the power supply to the unit prior to any

repair or maintenance of the unit in order to prevent electric shock or injury.

Do not touch any electrical parts (such as power supply plug) or operate switches with a wet

hand. This may cause electric shock.

WARNING

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PRECAUTIONS FOR SAFE OPERATION

Ensure you do not inhale or consume medication or aerosols from around the unit at the time of

maintenance. These may be harmful to your health.

Never splash water directly onto the unit as this may cause electric shock or short circuit.

Never put containers with liquid on the unit as this may cause electric shock or short circuit when

the liquid is spilled.

Never bind, process, or step on the power supply cord, or never damage or break the power

supply plug. A broken supply cord or plug may cause fire or electric shock.

Do not use the supply cord if its plug is loose. Such supply cord may cause fire or electric shock.

Never disassemble, repair, or modify the unit yourself. Any such work carried out by an

unauthorized person may result in fire, or electric shock or injury due to a malfunction.

Disconnect the power supply plug if there is something wrong with the unit. Continued

abnormal operation may cause electric shock or fire.

When removing the plug from the power supply outlet, grip the power supply plug, not the cord.

Pulling the cord may result in electric shock or fire by short circuit.

Disconnect the power supply plug before moving the unit. Take care not to damage the power

cord. A damaged cord may cause electric shock or fire.

Disconnect the power plug when the unit is not used for long periods. Keeping the connection

may cause electric shock, current leakage, or fire due to the deterioration of insulation.

If the unit is to be stored unused in an unsupervised area for an extended period, ensure that

children do not have access and that doors cannot be closed completely.

The disposal of the unit should be accomplished by appropriate personnel. Remove doors to

prevent accidents such as suffocation.

Do not put the packing plastic bag within reach of children as suffocation may result.

WARNING

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PRECAUTIONS FOR SAFE OPERATION

Use a dedicated power source (a dedicated circuit with a breaker) as indicated on the rating label

attached to the unit. A branched circuit may cause fire resulting from abnormal heating.

Connect the power supply plug to the power source firmly after removing the dust on the plug.

A dusty plug or improper insertion may cause a heat or ignition.

Never store corrosive substances such as acid or alkali in this unit if the container cannot be

sealed. These may cause corrosion of inner components or electric parts.

Check the setting when starting up of operation after power failure or turning off of power

switch. The stored items may be damaged due to the change of setting.

Be careful not to tip over the unit during movement to prevent damage or injury.

Prepare a safety check sheet when you request any repair or maintenance for the safety of service

personnel.

CAUTION

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ENVIRONMENTAL CONDITIONS

This equipment is designed to be safe at least under the following conditions (based on the IEC 61010-1):

 Indoor use;

 Altitude up to 2000 m;

 Ambient temperature 5

 Maximum relative humidity 80% for temperature up to 31

at 40

 Mains supply voltage fluctuations not to exceed 㼼10% of the nominal voltage;

 Other supply voltage fluctuations as stated by the manufacturer;

 Transient overvoltages according to Installation Categories (Overvoltage Categories) II; For mains

supply the minimum and normal category is II;

 Pollution degree 2 in accordance with IEC 60664.

C to 40oC

C decreasing linearly to 50% relative humidity

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FREEZER COMPONENTS

13 (inside)

9 (inside)

Power cord

Rear side

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FREEZER COMPONENTS

1. Outer door: To open the outer door, grip the handle. On closing, lock the outer door latch

completely.

2. Inner door: The operation of the inner door should be quick to minimize the temperature rise in chamber. Lock the inner door latch completely when the inner door is closed. The inner door is removable for cleaning or defrosting. See page 21 “Routine maintenance”.

3. Inner door latch: Always lock the inner door latch when the inner door is closed.

4. Outer door latch: Always lock the latch when the outer door is closed.

5. Magnetic door gasket: This provides a tight door seal and prevents cold air leak. Keep clean.

6. Air intake vent (grille): Do not block this vent to keep the proper cooling performance.

7. Caster: 4 casters are provided to facilitate moving of the cabinet. For the installation, adjust the

leveling foot so that the front 2 casters cannot contact with the floor.

8. Leveling foot: These are screw bolts used to install and fix the unit. Adjust the height of the leveling feet by turning the screw bolts until 2 front casters are away from the floor.

9. Condenser filter (behind the grille): This filter prevents the dust from accumulating on the condenser. The dusty filter may cause failure of refrigerating device. Clean the filter once a month. See page 20 “Routine maintenance” for the cleaning.

10. Space for temperature recorder: A temperature recorder (optional component) can be attached here. See page 27 “Temperature recorder”.

11. Lock: Turn clockwise to 180

12. Control panel: Used for temperature setting and indication of operating status is displayed on the panel. See page 10 for details.

13. Access port (rear and bottom): This is used for leading a cable and sensor of a measuring

equipment, or nozzle of back-up system to chamber.

14. Air intake port: After closing the outer door, if used to open soon. See page 17

15. Fixture (on back side): 2 fixtures serve as spacers between the cabinet and wall and also serve as

hooks to fix the unit. See page 12 “Installation”.

16. Power switch: This is for turning ON/OFF the power to the unit. ON – “I” OFF – “䕿”

17. Remote alarm terminal: This is used to notice an alarm condition of the unit to remote location.

Refer to page 17 “Remote alarm terminal”.

18. Battery switch: This is a switch for a battery for power failure alarm. Normally, turn on this switch.

Be sure to turn off this switch if the freezer is not in operating for the long period.

19. Fuse: 125 V, 3.15 A. Normal blow type.

with a key and the outer door is securely locked.

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FREEZER COMPONENTS

Control panel

1. Digital temperature indicator: This indicator shows the present chamber temperature or set temperature.

2. Battery check lamp (BATTERY): This lamp flickers to recommend the battery replacement. For

the replacement, consult Sanyo sales representative or agent.

3. Alarm lamp (ALARM): This lamp is flashed during alarm condition.

4. Filter lamp (FILTER): This lamp lights when the excessive dust is accumulated on the condenser

filter. When this lamp lights, clean the condenser filter following the procedure on page 20.

5. Numerical value shift key ( ): Pressing this key in the setting mode causes the numerical value to shift. “ON-OFF” of key lock can be selected by pressing this key in the key lock mode. By pressing this key for more than 5 seconds in the temperature display mode leads setting mode for alarm temperature, alarm resume time ,compressor delay time and door alarm delay time. Refer to page 15 and 16 for details respectively.

6. Digit shift key ( ): Pressing this key in the setting mode causes the changeable digit to shift. Key lock is available by pressing this key for more than 5 seconds in the temperature display mode. Refer to page 14 for details.

7. Set key (SET): Temperature set mode is led by pressing this key and the changeable digit is flashed. By pressing this key again, the setting is memorized. The set mode returns to the temperature display mode automatically when 90 seconds has passed without any key operation. Refer to page 14 for details.

8. Alarm test key (ALARM TEST): To check the alarm system. Pressing this key with the battery switch ON gets the alarm lamp to flash, the remote alarm to operate, and the buzzer to sound.

9. Alarm buzzer stop key (BUZZER): To silence the audible alarm under alarm condition, press this key. The buzzer during alarm test cannot be silenced by this key.

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+ 23 hidden pages